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Thread: Need more low end on my 83 250r

  1. #1
    Join Date
    May 2005
    Location
    Michigan
    --
    15

    Need more low end on my 83 250r

    Hey guys I want some more low end power, I do alot of trail riding and hardly ever get out of 2 or 3rd. But if I have to climb a big hill or something, seems like I never have enough low end. I have to feather the clutch and often I stall it. I am used to 4 strokes. Should I just get a biger rear sproket? Or what? Thanks.
    -Chris-
    83 Honda ATC250r
    87 TRX 250x with ATC 350x motor
    98 Polaris Trail Blazer 250
    89 Kawasaki KLR 250
    99 Yamaha WR400F

  2. #2
    Join Date
    Jan 2005
    Location
    Great Bend
    --
    704
    I have an '81R and it has factory gear ratio and I'm running 20" tire, 2 inches shorter than stock and that thing is a billy goat in the trails. If you are having problems going up hill with you 250r, crack the throttle open and it might help ya out. If you wnant nothing but bottom end 2-stroke torque, get a quadzilla or any big bore 2-stroke out of a dirt bike and stick it in a trike chassis.

  3. #3
    Join Date
    Mar 2004
    Location
    North Central Ohio!!
    --
    2,712
    That's almost unbelievable. My 83 has TONS of torque. I have a 12 tooth front sprocket and 20" rear tires. The key to climbing with a 2 stroke is tire spin, or momentum.
    2007 YAMAHA YTZ450 went to a great home RIP Sam


  4. #4
    Join Date
    Mar 2004
    Location
    Gettysburg PA
    --
    498
    if you still needed more low end you could probly get it ported for low end and you could also get a low end pipe. you could also try smaller back tires and going down a tooth in the front and up some in the back
    My Trikes

    1985 250sx
    &
    1986 250r
    Parting out 85 kxt tecate pm me with your needs

  5. #5
    Join Date
    Oct 2004
    Location
    Anaheim
    --
    1,270
    before i had my 85 i had a 83R i had geared for trail riding before i switched to dunes, i had stock port milled head, stock carb, stock pipe, 13-41 gearing with 20 inch kendras, open air box with a k/n filter, i know it doesnt sound like much but my cousins raptor and i would go all over the hills in homeland california and we had about the same power, even when i had it ported polished milled to 22cc dome stock carb jetted, and answer silencer for the sand i ran 13/38 gearing and 20 inch sand snake paddles.
    adam
    86 ATC 500R the duner..
    85 ATC 500R...the not quite finished faster duner
    1985 ATC 250R Bone stock!!
    1985 ATC250R mx/duner
    1986 TRX370R MX/Duner
    94 Banshee 400PV Cheetah 105RWHP

  6. #6
    Join Date
    Sep 2002
    Location
    Washingtons Crossing, Pa.
    --
    2,977
    In addition to the gearing choices .... you might want to consider a reed block spacer - before the cage. It'll help move the powerband of the motor "south".
    J. Jonny D, --- Quad - Trike relations committee Chairman and all around swell guy.

    Rides: '91 Warrior, '87 TW200, 1984 YTM225DX, 1984 ATC125M, '71 CL350 Scrambler

  7. #7
    Lots_Of_Nothing's Avatar
    Lots_Of_Nothing is offline So bombed at TF I needed both hands to hold my beer Teaching quads a lesson
    Join Date
    Oct 2002
    Location
    Upstate NY
    --
    2,665
    Air foolers have tons of low end, I bet your used to "crawling" up hills on the thumpers. Try dropping a tooth on the front sprocket. Your gonna have to change your riding style.. The trick is, Get some RPM's and speed, and keep them tires moving, and if your stuck in the middle, your gonna have to be pretty rough on the clutch.
    Give me no lip and I tell you no lie.

    -TF 05' , And cant wait till 06!


  8. #8
    Join Date
    Dec 2002
    Location
    deer park, texas
    --
    2,336
    i agree, i have an 83r and it sucks in low end. badly . if i am climbing a hill i have had xr80's passing me up. i really have not worried about it too much. but i am getting a 34mm flat slide, 86 reeds and a performance exhaust. that should help it along. but i stll need rear brakes.

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